Solution:

• The ciliary muscle is a ring of smooth muscle in the eye’s middle layer (vascular layer) that controls accommodation for viewing objects at varying distances and regulates the flow of aqueous humor into Schlemm’s canal.

• Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscle tissue, with the other two being skeletal muscle and smooth muscle.

• It is involuntary, striated muscle that constitutes the main tissue of the wall of the heart.